21747999

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 38384640

約数和(自身を除く): 16636641

約数列:

[1, 3, 7, 13, 21, 29, 39, 41, 67, 87, 91, 123, 201, 203, 273, 287, 377, 469, 533, 609, 861, 871, 1131, 1189, 1407, 1599, 1943, 2613, 2639, 2747, 3567, 3731, 5829, 6097, 7917, 8241, 8323, 11193, 13601, 15457, 18291, 19229, 24969, 25259, 35711, 40803, 46371, 57687, 75777, 79663, 107133, 108199, 176813, 238989, 249977, 324597, 530439, 557641, 749931, 1035619, 1672923, 3106857, 7249333, 21747999]

約数ペア:

[(1, 21747999), (3, 7249333), (7, 3106857), (13, 1672923), (21, 1035619), (29, 749931), (39, 557641), (41, 530439), (67, 324597), (87, 249977), (91, 238989), (123, 176813), (201, 108199), (203, 107133), (273, 79663), (287, 75777), (377, 57687), (469, 46371), (533, 40803), (609, 35711), (861, 25259), (871, 24969), (1131, 19229), (1189, 18291), (1407, 15457), (1599, 13601), (1943, 11193), (2613, 8323), (2639, 8241), (2747, 7917), (3567, 6097), (3731, 5829)]